Version 4 SHEET 1 2480 1012 WIRE 336 -176 240 -176 WIRE 496 -176 416 -176 WIRE 1360 -176 576 -176 WIRE 1520 -176 1360 -176 WIRE 1760 -176 1520 -176 WIRE 2112 -176 1840 -176 WIRE 1360 -160 1360 -176 WIRE 240 -144 240 -176 WIRE 1520 -144 1520 -176 WIRE -240 -64 -256 -64 WIRE -128 -64 -160 -64 WIRE -32 -64 -48 -64 WIRE 1360 -64 1360 -80 WIRE 1440 -64 1360 -64 WIRE 368 -32 320 -32 WIRE 464 -32 432 -32 WIRE 512 -32 464 -32 WIRE 624 -32 576 -32 WIRE 784 -32 736 -32 WIRE 928 -32 864 -32 WIRE 1520 -16 1520 -64 WIRE 1360 0 1360 -64 WIRE 1968 0 1904 0 WIRE 2112 0 2112 -176 WIRE 2112 0 2048 0 WIRE -256 64 -256 -64 WIRE -176 64 -256 64 WIRE -32 64 -32 -64 WIRE -32 64 -112 64 WIRE 0 64 -32 64 WIRE 96 64 64 64 WIRE 128 64 96 64 WIRE 240 64 240 -80 WIRE 240 64 208 64 WIRE 320 64 320 -32 WIRE 320 64 240 64 WIRE 352 64 320 64 WIRE 464 64 464 -32 WIRE 464 64 432 64 WIRE 512 64 464 64 WIRE 624 64 624 -32 WIRE 624 64 592 64 WIRE 736 64 736 -32 WIRE 736 64 624 64 WIRE 784 64 736 64 WIRE 928 64 928 -32 WIRE 928 64 864 64 WIRE 1024 64 928 64 WIRE 1184 64 1024 64 WIRE 1312 64 1184 64 WIRE 1632 96 1360 96 WIRE 1728 96 1696 96 WIRE 1744 96 1728 96 WIRE 1904 96 1904 0 WIRE 1904 96 1808 96 WIRE 1968 96 1904 96 WIRE 2112 96 2112 0 WIRE 2112 96 2032 96 WIRE 624 112 624 64 WIRE 736 112 736 64 WIRE 832 112 736 112 WIRE 96 144 96 64 WIRE 128 144 96 144 WIRE 240 144 240 64 WIRE 240 144 208 144 WIRE 736 144 736 112 WIRE 832 144 832 112 WIRE -32 160 -32 64 WIRE 1024 160 1024 64 WIRE 1360 160 1360 96 WIRE 1440 160 1440 -64 WIRE 1520 160 1440 160 WIRE 1728 160 1728 96 WIRE 1792 160 1728 160 WIRE 1904 160 1904 96 WIRE 1904 160 1872 160 WIRE 2000 160 1904 160 WIRE 2112 160 2112 96 WIRE 2112 160 2080 160 WIRE 2240 160 2112 160 WIRE 2352 160 2240 160 WIRE 2384 160 2352 160 WIRE 240 176 240 144 WIRE 1904 192 1904 160 WIRE 2016 192 1904 192 WIRE 2352 192 2352 160 WIRE -256 208 -256 64 WIRE 1904 208 1904 192 WIRE 2016 208 2016 192 WIRE 2240 208 2240 160 WIRE 1440 224 1440 160 WIRE 1520 224 1520 160 WIRE 624 240 624 192 WIRE 736 256 736 224 WIRE 832 256 832 224 WIRE 832 256 736 256 WIRE -32 288 -32 240 WIRE 240 288 240 256 WIRE 736 288 736 256 WIRE 1360 288 1360 240 WIRE 1904 304 1904 272 WIRE 1968 304 1904 304 WIRE 2016 304 2016 288 WIRE 2016 304 1968 304 WIRE 2016 320 2016 304 WIRE 2240 320 2240 288 WIRE 1904 336 1904 304 WIRE 624 368 624 320 WIRE -256 416 -256 288 WIRE -32 416 -32 368 WIRE -32 416 -256 416 WIRE 48 416 48 112 WIRE 48 416 -32 416 WIRE 144 416 48 416 WIRE 240 416 240 368 WIRE 240 416 144 416 WIRE 416 416 240 416 WIRE 736 416 736 352 WIRE 736 416 416 416 WIRE 1024 416 1024 240 WIRE 1024 416 736 416 WIRE 1360 416 1360 368 WIRE 1360 416 1024 416 WIRE 1440 416 1440 288 WIRE 1440 416 1360 416 WIRE 1520 416 1520 288 WIRE 1520 416 1440 416 WIRE 1856 416 1520 416 WIRE 1904 416 1904 400 WIRE 1904 416 1856 416 WIRE 1968 416 1968 304 WIRE 1968 416 1904 416 WIRE 2016 416 2016 400 WIRE 2016 416 1968 416 WIRE 2240 416 2240 384 WIRE 2240 416 2016 416 WIRE 2352 416 2352 272 WIRE 2352 416 2240 416 WIRE 416 448 416 416 WIRE 480 448 416 448 WIRE 624 448 624 432 WIRE 624 448 560 448 FLAG 144 416 0 FLAG 1184 64 preamp-in FLAG 1520 -16 0 FLAG 1856 416 0 FLAG 2384 160 out IOPIN 2384 160 Out SYMBOL Misc\\signal -256 192 R0 WINDOW 123 24 132 Left 0 WINDOW 39 0 0 Left 0 SYMATTR Value2 AC 1. SYMATTR InstName V1 SYMATTR Value "" SYMBOL cap 64 48 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C2 SYMATTR Value 220p SYMBOL cap 432 -48 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C3 SYMATTR Value 2p SYMBOL cap 576 -48 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C4 SYMATTR Value 3p SYMBOL ind 448 48 R90 WINDOW 0 5 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName L1 SYMATTR Value .82µ SYMBOL ind 608 48 R90 WINDOW 0 5 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName L2 SYMATTR Value .82µ SYMBOL res 608 96 R0 SYMATTR InstName R2 SYMATTR Value 150 SYMBOL ind 608 224 R0 SYMATTR InstName L3 SYMATTR Value 15µ SYMBOL cap 608 368 R0 SYMATTR InstName C5 SYMATTR Value 560p SYMBOL res 576 432 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R3 SYMATTR Value {rsw} SYMBOL ind 720 128 R0 SYMATTR InstName L4 SYMATTR Value 220µ SYMBOL res 816 128 R0 SYMATTR InstName R4 SYMATTR Value 10k SYMBOL cap 720 288 R0 SYMATTR InstName C6 SYMATTR Value 82p SYMBOL ind 880 48 R90 WINDOW 0 5 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName L5 SYMATTR Value 3.3µ SYMBOL res 880 -48 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R5 SYMATTR Value 1k SYMBOL res 1008 144 R0 SYMATTR InstName R6 SYMATTR Value 470k SYMBOL cap -112 48 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C_ant SYMATTR Value 4p SYMBOL res -144 -80 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R7 SYMATTR Value {rsw} SYMBOL res -32 -80 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R8 SYMATTR Value 600 SYMBOL ind -48 144 R0 SYMATTR InstName L6 SYMATTR Value 220µ SYMBOL res -48 272 R0 SYMATTR InstName R107 SYMATTR Value {r107} SYMBOL res 224 160 R0 SYMATTR InstName R10 SYMATTR Value {rattn1} SYMBOL res 224 128 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R11 SYMATTR Value {rattn2} SYMBOL njf 1312 0 R0 SYMATTR InstName J1 SYMATTR Value J2sk152 SYMBOL ind 1376 384 R180 WINDOW 0 36 80 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName L7 SYMATTR Value .82µ SYMBOL res 1344 144 R0 SYMATTR InstName R1 SYMATTR Value 100 SYMBOL cap 1424 224 R0 SYMATTR InstName C1 SYMATTR Value 10n SYMBOL res 1376 -64 R180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R12 SYMATTR Value 47 SYMBOL cap 224 -144 R0 SYMATTR InstName C9 SYMATTR Value 470p SYMBOL res 432 -192 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R13 SYMATTR Value 22k SYMBOL ind 592 -192 R90 WINDOW 0 5 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName L8 SYMATTR Value 1µ SYMBOL cap 1808 80 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C10 SYMATTR Value 10p SYMBOL cap 2032 80 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C11 SYMATTR Value 1p SYMBOL cap 1920 272 R180 WINDOW 0 24 64 Left 0 WINDOW 3 24 8 Left 0 SYMATTR InstName C12 SYMATTR Value 82p SYMBOL res 2336 176 R0 SYMATTR InstName RL1 SYMATTR Value {rload} SYMBOL cap 1696 80 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C13 SYMATTR Value 10n SYMBOL ind 1888 144 R90 WINDOW 0 5 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName L10 SYMATTR Value .82µ SYMBOL ind 2096 144 R90 WINDOW 0 5 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName L11 SYMATTR Value 1µ SYMBOL res 2000 304 R0 SYMATTR InstName R14 SYMATTR Value 47k SYMBOL cap 1920 400 R180 WINDOW 0 24 64 Left 0 WINDOW 3 24 8 Left 0 SYMATTR InstName C14 SYMATTR Value 10n SYMBOL res 2000 192 R0 SYMATTR InstName R15 SYMATTR Value 10k SYMBOL res 1856 -192 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R16 SYMATTR Value 2.2k SYMBOL voltage 1520 -160 R0 SYMATTR InstName V3 SYMATTR Value 6 SYMBOL res 224 48 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R17 SYMATTR Value 680 SYMBOL res 224 272 R0 SYMATTR InstName R18 SYMATTR Value 68 SYMBOL ind 2256 304 R180 WINDOW 0 36 80 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName L9 SYMATTR Value .82µ SYMATTR SpiceLine Rser=10m SYMBOL cap 2256 384 R180 WINDOW 0 24 64 Left 0 WINDOW 3 24 8 Left 0 SYMATTR InstName C7 SYMATTR Value 9p SYMBOL res 2064 -16 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R19 SYMATTR Value 4.7k SYMBOL cap 1504 224 R0 SYMATTR InstName C8 SYMATTR Value 22µ TEXT 416 520 Left 0 !.step param rsw list 10meg 10m TEXT 696 608 Left 0 !.ac dec 100 100k 100meg TEXT 64 576 Left 0 !;.step param rattn1 list 10meg 10m TEXT 64 640 Left 0 !.param rattn2=10meg-rattn1+10m TEXT 64 608 Left 0 !.param rattn1=10meg TEXT 2264 448 Left 0 !.param rload=10k TEXT 1336 520 Left 0 !.model MPF102 NJF(Beta=1.04m Betatce=-.5 Rd=1 Rs=1 Lambda=2m Vto=-3.41\n+ Vtotc=-2.5m Is=33.57f Isr=322.4f N=1 Nr=2 Xti=3 Alpha=311.7u\n+ Vk=243.6 Cgd=1.6p M=.3622 Pb=1 Fc=.5 Cgs=2.414p Kf=11.73E-18\n+ Af=1)\n* National pid=50 case=TO92\n* 88-08-02 rmn BVmin=25\n*$\n.model J310 NJF(Beta=3.384m Betatce=-.5 Rd=1 Rs=1 Lambda=17m Vto=-3.409\n+ Vtotc=-2.5m Is=193.9f Isr=1.881p N=1 Nr=2 Xti=3 Alpha=7.533u\n+ Vk=74.1 Cgd=6.2p M=.4647 Pb=1 Fc=.5 Cgs=6.2p Kf=46.34E-18\n+ Af=1)\n* National pid=92 case=TO92\n* 88-07-14 bam BVmin=25\n*$\n.model J2sk152 NJF(Beta=22.6m Rs=9.028 Rd=9.028 Betatce=-.5 Lambda=33.33m\n+ Vto=-1.067 Vtotc=-2.5m Cgd=3.634p M=.3333 Pb=1 Fc=.5 Cgs=5.892p\n+ Isr=51.93p Nr=864.6 Is=5.193p N=1 Xti=3 Alpha=435.7u Vk=81.6\n+ Kf=2.599E-18 Af=.7991) TEXT -200 -128 VLeft 0 ;antenna jack switch (2) TEXT -224 128 Left 0 ;whip ant model TEXT 464 576 Left 0 ;atten: DX - LOCAL TEXT 464 608 Left 0 ;atten: DX TEXT 80 200 Left 0 ;atten sw: DX TEXT 256 264 Left 0 ;atten sw: LOCAL TEXT 576 480 Left 0 ;antenna jack switch (1) TEXT 2368 304 Left 0 ;next\nstage TEXT 1336 488 Left 0 ;JFET models - 2SK152 is closest to 2SK508 TEXT -56 280 Right 0 ;changed\nresistor -->\nfor whip\nmatching\nmod TEXT -56 440 Right 0 ;(new value: 22k) TEXT 848 -384 Left 0 ;ICF-SW7600G input stage TEXT 1592 -112 Left 0 ;supply TEXT 808 576 Left 0 ;AC sim TEXT -32 464 Left 0 !.step param r107 list 470 22k TEXT 496 -120 Left 0 ;parasitic